Change log for PROOFPOINT_TRAP

Date Changes
2024-12-12 Enhancement:
- Added support for the new pattern of JSON logs.
2024-09-11 Enhancement:
- When "proofpoint_trap_host" is a valid IP then mapped it to "intermediary.ip". Otherwise, mapped it to "intermediary.ip".
- Mapped "users" to "principal.user.userid".
- Mapped "received" to "metadata.event_timestamp".
- Added support for JSON logs.
2024-06-05 Enhancement:
- Added support for JSON logs.
2023-05-26 Added mapping for the following fields:
- "ewsUrl" mapped to "principal.url".
- "username" mapped to "principal.user.user_display_name".
- "exchangeAuthType","exchangeAPI","tenantId","clientId","clientSecret","graphApiEndpoint","alternateGraphApiEndpoint",
"azureAdAuthEndpoint","privateKey" mapped to "additional.fields".
2022-08-23 Newly Created Parser